<table>
                <tr>
                    <td>
                        <input type="text" value="" id="txtShow" />
                    </td>
                </tr>
                <tr>
                    <td>
                        <span style="cursor: pointer;" onclick="getName(this.innerHTML)">#aa</span>
                    </td>
                </tr>
                <tr>
                    <td>
                        <span style="cursor: pointer;" onclick="getName(this.innerHTML)"> bb</span>
                    </td>
                </tr>
                <tr>
                    <td>
                        <span style="cursor: pointer;" onclick="getName(this.innerHTML)">$你好,这样就可以了#</span>
                    </td>
                </tr>
            </table>
<script language="javascript" type="text/javascript">
function getName(name)
{
document.getElementById("txtShow").value=name;
}
</script>